Forging machine



Nov. 22, 1927. 1,650,582 S. T. NELSON FORGING MACHINE Original Filed Jan. 23, 1922 2 Sheets-Sheet l Nov. 22, 192 7. 1,650,582

5. T. NELSON FORGING MACHINE Original Filed Jan. 25, 1.922 2 Sheets-Sheet 2 Patented Nov. 22, i927.

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i rename MACHINE.

Application filedlanuarygfilflfz, Serial No. 531,208. Renewedlfuly 18, 1927.

My invention relates to forgiv .machines, and more particularly to for v machines designed to shape blanks into cutter bits for coal mining machines of the chain type.

An object of myinvention is to provide an improved forging machine. 1 Another object of my invention is to provide an improved forging machine in. ..whic'h a blank may be advantageously shaped to the desired form and returned to a, position for ready removal. A further object ofmy invention is toprovidean improved forging machme havlng improved means tor vary :ingthe shape of the finished blank. Other objects and "advantages of my invention will j j an arc whose radius isequal to the distance hereinafter more fully appear.

In the accompanying drawings 1 have shown for purposesof illustration one form which my invention may assumein practice.

In these drawings,-

Fig. 1 is a view partially in side elevation and partially with parts broken away to the central plane. of the machine, showing an illustrative embodiment of my invention.

Fig. 2 is a front eievation oiysuch; a machine. 1

Fig. 3 is a view on an enlarged scale and with parts shown in elevation, but mainly on a central vertical plane through the machine, certain parts being shown lnjlOttGd lines in a different position.

Fig. 4: is a section on the line 4 of Fig. 3 with parts brokenaway toshow details of construction. r

In the embodiment of my invention which I have shown for purposes of illustration in the accompanying drawings. and which I shall now ClOSC11 bG, tli8 same ;is mounted upon a heavy frame 1. In this frame is supported somewhat above the center there of, transversely extendingjrock shaft 2 upon which thereis mounted an oscillating blank carrying member?) which is of considerable weight and is provided with a slot or socket a in which ablank 5 tobe sharp ened may be inserted and with a die 6 ar ranged adjacent the socketi in such manner as to support and form, in ahmanner here1nafter more fully apparent, a blank during the forging operation.

Adjacent the top of arranged a series of rotatable dies 8, .9 and which are mounted on transverseshafts 11, 1.2 and 13 whose axes lie in a surface of revolution whose directrix coincides with the frame 1 there are the axis of the shaft 2. It will accordingly be apparent that a die fixedly carried in the slot l would'be impinged by the die 8 and 1f sufliciently flattened would not touch the dies 9' and 10 unless moved before it reaches them. From Figs. 2 and l it will belnoted thatthe dies 8, 9 and 10 are provided with peripheral grooves of across section to receive the die 6 and to" fit the desired end section of-a finished blank. For the purpose of causing the dies 8,. 9

and .10 to successively more and .more'nearly I perfectly finish a blank, a guide member .16

is pivoted as at 17, on the, frame 1 and is shaped on a curvature corresponding: vith.

and IQ- F or the purpose of adjusting the member 16. to accomplish the protrusion of the blank to differentdegrees, I have mountedan eccentric 0r cam 1 8; up o'n a transverse shaft 19 extending throughonewallot the frame 1 and adjustable by. means of alevcr 2Q. It will be evident that as the eccentric '18 is turned so that .itsgreatest eccentricity comes between the shaft 19and the adjacent surface oi the guide 16 the bit will-be progressively furtherprotruded. j

For the purpose ofoscillating the carrier member 3,.l connect a connecting rod 21 tov a pin 22 at the lower end thereof and this connecting rod 'is driven by arcrank pin 23 on crank 24 i'ormed on a shaft 25, which shaftis provided with a driving pinion 26 which meshes with a pinion 27 secured to a shaft 28 and thelatter is drivenlby a pinion 29 which is in turn driven from a pinion 30 upon a shaft 31 which supports; the driving pulley 32. It. will bev apparent that. the

pulleyv 32 may be driven by a belt or in any other suitable manner from any source oi" power. M

1 The mode of operation of this device will be readily apparent. A heated blank will be insertedin the, slotor socket 4 when the parts are in the position shown in Fig. 1.

-,'lhis heated blank will then be caused to moveunderthe several dies, '8, 9 and 10, and

will be formed between these dies and the die 6 to the proper shape. If more material is required to fill up the full contour of the end of th blank, the shaft 19 may be rotated by the handle 20 to cause the guide member 16 to force out the blank as may be necessary. The finished blank may be, removed by means of tongs or in any other suitable manner when the parts are again at rest in the position shown in Fig. 1.

While I have in this application specifically described one form which my invention may assume in practice, it- 'will be un derstood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims. 4

What I claim as new and desire to secure by Letters Patent is: a

'LIn a forging machine, a plurality of grooved dies, a complemental die formed to extend into the grooves in said other dies, and oscillatory means carrying said complemental dierand moving the same successively into the grooves in said other dies.

2. In a forging machine, a plurality of relatively stationary grooved dies, a complemental die formed to extend into the grooves in said other dies, and oscillatory means carrying said complemental die and moving the same successively into the grooves in said other dies.

3. In a forging machine, a plurality of grooved dies rotatable upon fixed axes, a

complemental die formed to extend into the grooves in said other dies, and means carrying said complemental die and moving the same "successively into the grooves in said other dies and for thereafter returning, through the same path,'to its initial position said complemental die.

4. In a forging machine, a plurality of grooved roller dies rotatable about fixed axes, complemental die means formed to extend into the grooves in said roller dies, and means for causing said die means'to extend successively into the grooves in said dies and for thereafter moving said die means in a reverse direction through said grooves.

In a forging machine, a blank carrier adapted to move a blank in opposite directions' along a given path, a series of relatively stationary dies disposed for successive engagement by a blanlr'moving in said carrier, and means for adjusting said blank to vary its engagement with said stationary dies.

6. In a forging machine, a blank carrier adapted to move'a blank in opposite directions along a given path, a series of relatively stationary dies-disposed for successive engagement by a blank moving in said carrier, and stationary means for'adjust-ing said blank to vary its engagement with said stationary dies.

7. In a forging machine, an oscillatable blank carrier, a plurality of rotatable dies disposed with their axes of rotation in a surface of revolution whose directrix coincides with the axis of oscillation of said blank carrier, arcuate blank guiding means disposable concentrically with the surface of revolution including said die axes, and means for moving one end of said guiding means to move it out of concentricity with said surface.

8. In a forging machine, an oscillatablc blank carrier, a plurality of rotatable dies disposed with their axes of rotation in a surface of revolution whose directrix coincides with the axis of oscillation of said oscillating blank carrier, arcuate blank guiding means disposable concentrically with said surface of revolution including said die axes, and means for moving one end of said guidirw means to move it out of concentrieity with said surface including a cam manually adjustable and engaging said guiding means.

9. In a cutter bit forging machine, a blank support, and means for adjusting a bit blank relative thereto including a plurality of angularly movable members each having stationary pivoting points.

10. In a for ing machine, a blank support. and blank ad usting means including a plurality of angularly movable members, said members being movable relative to each other.'

11. In a forging machine, a grooved die, a cooperating raised die, and oscillating blank'carrying means adapted to cooperate with said dies.

12. In a forging machine, a grooved die, a cooperating raised die, oscillating blank carrying means adapted to cooperate with said dies, and means for adjusting blanks carried thereby.

13. In a forging machine, cooperating interfitting grooved and raised dies, and a blank carrier comprising a segment oscillatable in opposite directions.

14. In a forging machine, a support. blank supporting means mounted on said support and movable relative thereto, blank adjusting means carried by said support including a? movable blank engaging member, and a' relatively-movable member engaging the same to cause movement thereof.

15. The combination comprising a movable blank supporting member, means for feeding blanks carried thereby including a pivoted member, and means for moving one end of said member about said pivot to feed said blanks including a controlling element having a relatively fixed position.

'16. The combination comprising a support, a blank supporting member mounted thereon and movable relative thereto, means for adjusting blanks carried by said'supdies and support.

18. In a forging machine, a support, a

plurality of dies carried thereby, a blank support mounted on said support and mov able relative thereto, means for" causing relative oscillatory movement between said dies and said blank support, and blank adjusting means operatively connected to said firstmentioned support. i

19. In a forging machine, a die, a movable blank carrier, and means for feeding a blank along its longitudinal axis including a manually operable shaft angularly dioposed to the path of movement of said carrier.

20. In a forging machine comprising a support, a blank carrier mounted thereon and movable relative thereto, and means operable during a. forging operation for automatically feeding a blankcarried by said carrier including a relatively stationary blank support and a movable member adapted to have a plurality of operating positions With respect thereto in each of which it imparts a different position to said blank support.

21. A forging machine comprising a blank carrier, and means operable during a forging operation for automatically feeding blanks carried thereby, saidmeans including an adjusting cam adjustable during a forging operation.

22. A forging machine comprising a support, a blank carrier mounted thereon and movable relative thereto, and means operable during a forging operation for automaticallyv feeding the blanks carried by said carrier, said means including relatively movable members so related that adjustment of one effects adjustment of the other.

:23. A forging machine comprising a, sup port, a blank carrier mounted thereon and movable relative thereto, and means operable during a forging operation for automatically feeding the blanks carried by said carrier, said means including a member movable during a forging operation on a. blank carried by said carrie 24. A forging machine comprising a' blank carrier, and means operable during a forging operation for automatically feeding blanks carried thereby, said means including a rotatable cam and a member normally engaging the same.

pivot to adjust 25. A forging machine comprising a support, a blank 'carrier mounted thereon and movable relative thereto, and means oper able during a forging operation for automatically feedin the blanks carried [by aid carrier, said? means including a rotat able cam and a member'having sliding en gagement therewith.

261 A forging machine comprising a sup port, a blank carrier mounted thereon and movable relative thereto, and means operable during a'forging operation for automatically feeding the blanks carried by said carrier comprising a movable member and a cooperating member rotatable about a relatively fixed axis and adjustable by movement of said first mentioned member.

27. A forging machine comprising a sup-- port, .a blank carrier mounted thereon and movable relative tl1ereto,and means engageable With blank carried by said carrier for feeding the same during a forgingoperation comprising a pivoted arcuate blank engaging member anda rotatable cam operating therewith.

28. A forging machine comprising a blank carrier oscillat-able about an axis, die means disposed to one side of said axis to perform a forging operation on a blank in said carrier, and means for effecting relative oscillatory movement between said dies and blank carrier, said last means being disposed on the opposite side of said axis.

29. In a cutter bitforging machine, a die having a groove adapted to form the sides of the cutting portion of the bit, a projecting die against which the front cutting surface of the bit is formed, and oscillatory means for effecting a relation of said dies in Which said projecting die extends into the groove in said other die.

30. In a cutter bit forging machine, a roller die having a circumferentially extending groove for forming the sides of the cutting portion of the bit, a projecting die against which the front cutting surface of the bit is formed, and oscillatory means for effecting a relation of said dies in which said pro ecting die extends into thegroove in said roller die.

31. In a cutter bit forging machine, a. roller die rotatable about a relatively fixed axis and having a circumferentially extending groove for forming the sides of a cutting portion .of a bit, a movable projecting die against which the front cutting surface of the bit is formed, and oscillatory means carrying said projecting die for effecting a relation of said dies in which said projecting die extends into the groove in'said roller die. i

32. Ina forging machine, a grooved die, a complemental die formed to extend into the groove in said other die, and oscillatory means carrying said complemental die for effecting the relation of said dies in which said ,complemen tal die extends into the groove in said other die.

33. In a forging. machine, a rotatable grooved roller die, a colnplemental die formed to extend into the groove in said roller die, and oscillatory means for effecting a relation of said dies in which said complemental die is moved to extend into the groove in said other die;

'34. In a forging machine, a grooved roller die rotatable about a relatively fixed axis, a projecting die formed to extend into the groove in said roller die, and means including an oscillatory member carrying said projecting die for efi ecting a relation of said dies in which said projecting die extends into the groove of said roller die.

35. In a cutter bit forging machine, a die for forming the sides of the cutter bit, a coinplemental die against which the front surface of the bit is formed, and oscillatory blank carrying means adapted to cooperate with said dies. i

In testimony whereof I afiix my signature.

SVEN T. NELSON. 

